Connection Types - Pipes

Table of Contents

1 Metal Pipe Connection Types/Joining Methods
- 1.1 Welding
- 1.2 Tri-Clamp
- 1.3 Bevel Seat
- 1.4 DIN
- 1.5 SMS
- 1.6 Cam and Groove
- 1.7 NPT Thread
- 1.8 Garden Hose Thread
- 1.9 Hose Barb
- 1.10 Push to Connect
2 Plastic and PE Pipe Connection Types/Joining Methods
- 2.1 Thermal Heat Fusion Methods
  - 2.1.1 Butt Fusion
  - 2.1.2 Conventional Fusion
  - 2.1.3 Socket Fusion
- 2.2 Electrofusion
- 2.3 Flange Connections
3 Pipe Thread Forms
4 Other Connection Types
5 References
- 5.1 Contributors:
  - 5.1.1 Butt Fusion

Metal Pipe Connection Types/Joining Methods

Welding

Welding is a manufacturing process where parts/components are joined together through heat. Welding stainless steel is more difficult than other materials such as carbon steel because you need to exercise more care in temperature and choice of filler material [1][2].

Figure 1: Stainless steel joining method [1].

Figure 1: Stainless steel joining method [1].

Tri-Clamp

Tri-Clamp is a connection method first developed Alfa-Laval under the product name Tri-Clover. It functions by having two tri-clamp ends connected to aluminium pipes, a gasket to seal the two ends, and a clamp to lock everything into place [2].

Figure 2: Tri-Clamp/Tri-Clover Connection [3].

Figure 2: Tri-Clamp/Tri-Clover Connection [3].

Bevel Seat

Bevel Seat is a connection thread type that is very common in North America. It functions by having a male and female connector be joined together by a gasket, and tightened with a nut to seal [2].

Figure 3: Bevel Seat Connection [4].

Figure 3: Bevel Seat Connection [4].

DIN

DIN is a threaded connector type first developed in Germany, and stands for Deutsche Industrial Norme. Like the Bevel Seat, it functions with a male and female connector, accompanied by a gasket and a nut to seal. The product however is more common in Europe and China [2].

Figure 4: DIN Connection [5].

Figure 4: DIN Connection [5].

SMS

A threaded connection type that is less common than DIN. But also functions with a male and female connector, accompanied by a gasket and a nut to seal. Originally developed in Sweden, SMS stands for Swedish Milk Standard [2].

Figure 5: SMS Connection [6].

Figure 5: SMS Connection [6].

Cam and Groove

The Cam and Groove connection type is also called the Camlock fitting. It functions with a male end and a female end, and are mostly used for hosing connections [2].

Figure 6: Cam and Groove Connection [7].

Figure 6: Cam and Groove Connection [7].

NPT Thread

NPT Thread North American technical standard which stands for National Pipe Thread. It functions with a male end and a female end, and is more commonly used for non-sanitary piping rather than sanitary tubing [2].

Figure 7: NPT Thread Connection [8].

Figure 7: NPT Thread Connection [8].

Garden Hose Thread

Garden Hose Thread connectors are usually used for water applications such as wash down hoses. It functions with a male end and a female end, accompanied by a gasket [2].

Figure 8: Garden Hose Thread Connection [9].

Figure 8: Garden Hose Thread Connection [9].

Hose Barb

The Hose Barb connection allows for easy push-connection for stainless steel and elastic hoses. It functions with a male barb end and a female hose end, and is sometimes accompanied by a external clamp [2].

Figure 9: Hose Barb Connection [10].

Figure 9: Hose Barb Connection [10].